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59

Step-by-step Answer
PAGE: 253SET: ExercisesPROBLEM: 59
Please look in your text book for this problem Statement

The acceleration due to gravity is  meters/sec/sec.

The initial velocity of object is zero.

.

Acceleration of a object is rate of change in velocity .

Velocity is .

.

Substitute  in .

.

Substitute .

.

Substitute  in .

.

The position of a object at time  is .

Velocity of  a object is rate of change in position .

Position at time  is  .

. 

The initial height of object is  feet.

.

Substitute  in .

Substitute .

.

Substitute  in .

.

The object reaches the ground after  sec.

.

Substitute .

 m.

The stone fall  m.

The velocity of an object is .

Substitute .

.

Negative velocity means the object is falling down.

The impact velocity is m/sec.

The stone fall  m.

The impact velocity is m/sec.



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